First, understand your needs.

Select the gas detector need to be clear which gases to detect? In what environment? Portable or fixed? What are the other additional functions. These reasons usually need to be considered. Otherwise, in the case of purchasing a gas detector, there will be many problems, resulting in unnecessary economic losses.

Second, understand the operating conditions of the use environment

Various gas detectors usually have strict requirements on the field environment, such as temperature -20~60, humidity 0-95% RH, pressure 80-120Kpa, etc., and have strict requirements on dust, flow, etc. Because other impurities in the environment will have a significant impact on the test results, resulting in great losses. At the same time, master the working conditions on site and provide this information to the manufacturer in time, and the manufacturer will take corresponding solutions.

Third, understand the safety situation on the site

The installation and use of gas detectors have mandatory requirements such as explosion-proof. The coal, petroleum and chemical industries have very strict explosion-proof requirements and require explosion-proof and explosion-proof certification of the equipment itself. Other environments may require certification of environmental protection on the gas detector or approval of measuring instruments.

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fourth, understand the functional requirements for use

the general functions of gas detectors are gas concentration detection, alarm, etc. However, many customers not only need these functions, but also need an aspect of signal output, if necessary, current output, digital signal output, voltage output and switching output. There may be other special requirements, such as network interfaces and wireless signals. Data logging and processing are also relatively common requirements.

5. to know the origin of the sensor

Many gas detector manufacturers' sensors show that they are overseas sensors, which is not true. There are some counterfeit imported sensors that come to pit consumers.When this happens, you should carefully verify product information and sign purchase and sales contracts if necessary to protect your rights and interests.

These are the issues that I have summarized for you to pay attention to when choosing a gas detector. It is recommended that you choose a regular brand and buy it directly from the factory. In this way, technical support problems such as after-sales will be well solved.